<template>
  <div>
    <!-- 三级分类 -->
    <TypeNav />
    <div class="main">
      <div class="py-container">
        <!--bread 面包屑-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <a href="#">全部结果</a>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <!-- 分类面包屑 -->
            <li class="with-x" v-if="searchparams.categoryName">{{searchparams.categoryName}}<i @click="removecategoryName">x</i></li>
            <!--关键字面包屑  -->
            <li class="with-x" v-if="searchparams.keyword">{{searchparams.keyword}}<i @click="removekeyword">x</i></li>
            <!--品牌信息面包屑 split将字符串分割为字符串数组 -->
            <li class="with-x" v-if="searchparams.trademark">{{searchparams.trademark.split(":")[1]}}<i @click="removetmmark">x</i></li>
            <!--商品属性面包屑 -->
            <li class="with-x" v-for="(attr,index) in searchparams.props" :key="index">{{attr.split(":")[1]}}<i @click="removeattr(index)">x</i></li>
          </ul>
        </div>

        <!--子组件 selector-->
        <SearchSelector @tmdsearch='reqSearch' @attrsearch='reqattr' />

        <!--details 本身组件内容·-->
        <div class="details clearfix">
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <ul class="sui-nav">
                <!-- 这里有个细节要注意，对象里面属性名原始是字符串形式的，只不过js平常使用属性名是简写的， -->
                <!-- 在使用字体图标时，因为它的类名一般都是icon-xxx,所以属性名必须使用字符串形式 -->
                <li :class="{active:isone}" @click="changeorder('1')">
                  <a >综合<span v-if="isone" class="iconfont" :class="{'icon-jiantou_xiangxia':isdesc,'icon-jiantou_xiangshang':isasc}"></span></a>
                </li>
                <li :class="{active:istwo}" @click="changeorder('2')">
                  <a >价格<span v-if="istwo" class="iconfont" :class="{'icon-jiantou_xiangxia':isdesc,'icon-jiantou_xiangshang':isasc}"></span></a>
                </li>
              </ul>
            </div>
          </div>
          <div class="goods-list">
            <ul class="yui3-g">
              <!-- 展示10件商品 -->
              <li class="yui3-u-1-5" v-for="s1 in goodsList" :key="s1.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <router-link :to="`/detail/${s1.id}`">
                      <img :src="s1.defaultImg" />
                      </router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥</em>
                      <i>{{s1.price}}</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <a target="_blank" href="item.html" title="促销信息，下单即赠送三个月CIBN视频会员卡！【小米电视新品4A 58 火爆预约中】">{{s1.title}}</a>
                  </div>
                  <div class="commit">
                    <i class="command">已有<span>2000</span>人评价</i>
                  </div>
                  <div class="operate">
                    <router-link class="sui-btn btn-bordered btn-danger" :to="`/detail/${s1.id}`">加入购物车</router-link>
                    <a href="javascript:void(0);" class="sui-btn btn-bordered">收藏</a>
                  </div>
                </div>
              </li>
            </ul>
          </div>
          <!-- 分页器 -->
          <Pagination 
          :total="searchlist.total"
          :pageNo="searchparams.pageNo"
          :pageSize="searchparams.pageSize"
          :contiues="contiues"
          @crruentpage="changePageno"
          />
        </div>
      </div>
    </div>
  </div>
</template>

<script>
// 引入全局事件总线
  import Bus from '@/bus.js'
  import SearchSelector from './SearchSelector/SearchSelector'
  import { useStore } from 'vuex'
  import{toRefs,reactive,watchEffect,computed,watch} from 'vue'
  import { useRoute,useRouter} from 'vue-router'

  export default {
    name: 'Search',

    components: {
      SearchSelector
    },
    setup() {
      const store =useStore()
      const route = useRoute()
      const router = useRouter()
       const {goodsList} ={...toRefs(reactive(store.getters))}//使用getters不分模块
      // 分页器数据
       const {searchlist}={...toRefs(store.state.searchList)}
      let contiues=5
    
      // 给服务器发送参数的基本内容格式
      const searchparams =reactive({
                 "category1Id": "",
                 "category2Id": "",
                "category3Id": "",
                "categoryName": "",
                "keyword": "",
                "order": "1:desc",
                "pageNo": 1,
                "pageSize": 5,
                "props": [],
                "trademark": ""
                })
      //watchEffect函数：监视在里面执行的回调函数里面用到的所有属性
      // 检测路由跳转非常强大好用
      // watchEffect在组件完成挂载前就已经检测到组件路由属性发生的变化
      //所以 watchEffect在组件挂载前已经先检测到路由信息变化然后执行回调，然后组件再完成挂载，路由完成跳转，
     watchEffect(()=>{
                  // 在检测到下一次路由信息要改变，先把之前参数置空
                  searchparams.category1Id=undefined
                  searchparams.category2Id=undefined
                  searchparams.category3Id=undefined
                  searchparams.categoryName=undefined
                  searchparams.keyword=undefined
                  searchparams.trademark//监视tmdmark品牌信息
                  searchparams.props//监视属性
                  searchparams.order//监视商品排序
                  searchparams.pageNo
                 let canshu= Object.assign(searchparams,route.query,route.params)//把参数合并
                  store.dispatch('SearchList',canshu)//--请求search组件商品数据
                     
                })
      // 点击面包屑的x去除分类信息标签并修正路由信息
     function removecategoryName(){
            if (route.params) {//watchEffect先检测到数据发生变化到发生后路由才完成跳转
              router.push({name:"search2",params:route.params})
            }
             
     }
     // 点击面包屑的x去除标签搜索词并修正路由信息，并采用全局事件总线实现清除搜索框里的关键
     function removekeyword(){
            if (route.query) {
              router.push({name:"search2",query:route.query})
            }
            Bus.emit('clearkeyword') //通过全局事件总线实现组件通信--告诉header组件清除搜索关键字
     }
      // 点击面包屑的x去除商品属性信息标签
     function removeattr(index){
        searchparams.props.splice(index,1)
     }
        // 点击面包屑的x去除品牌信息标签
     function removetmmark() {
            searchparams.trademark=undefined//点击x先将品牌信息置空，然后watchEffect检测到变化会重新发送请求
     }
    //  使用自定义事件收到从子组件传递的品牌信息重新整理参数向服务器请求数据
     function reqSearch(tmdata){
        searchparams.trademark=`${tmdata.tmId}:${tmdata.tmName}`//把收到数据整理到参数，watchEffect会检测到数据变化从而发请求
     }
    //使用自定义事件收到从子组件传递的属性筛选商品
     function reqattr(attrname,attrvalue){
       let attr=`${attrname.attrId}:${attrvalue}:${attrname.attrName}`
       if(!searchparams.props.includes(attr)){//数组去重处理
           searchparams.props.push(attr)//把收到数据整理到参数，watchEffect会检测到数据变化从而发请求
       }
     }
    // 点击综合和价格改变排序
    function changeorder(flag){
      let order =searchparams.order.split(":")[1]
    if(flag=='1'){
      if(order=="asc"){
        searchparams.order=`${flag}:desc`
      }
     else if(order=="desc"){
        searchparams.order=`${flag}:asc`
      }
    }
    else if(flag=='2'){
      if(order=="asc"){
        searchparams.order=`${flag}:desc`
      }
     else if(order=="desc"){
        searchparams.order=`${flag}:asc`
      }
    }

    }
   function changePageno(index){
      searchparams.pageNo=index
   }
    // 计算属性
    let isone= computed(()=>{
      return searchparams.order.indexOf('1')!=-1
    })
     let istwo= computed(()=>{
      return searchparams.order.indexOf('2')!=-1
    })
     let isasc= computed(()=>{
      return searchparams.order.indexOf('asc')!=-1
    })
     let isdesc= computed(()=>{
      return searchparams.order.indexOf('desc')!=-1
    })
    
    return {
        goodsList,searchparams,
        isone,istwo,isasc,isdesc,searchlist,
        removecategoryName,removekeyword,reqSearch,removetmmark,reqattr,removeattr,changeorder,changePageno,
        contiues
      }
    }
  }
</script>

<style lang="less" scoped>
  .main {
    margin: 10px 0;

    .py-container {
      width: 1200px;
      margin: 0 auto;

      .bread {
        margin-bottom: 5px;
        overflow: hidden;

        .sui-breadcrumb {
          padding: 3px 15px;
          margin: 0;
          font-weight: 400;
          border-radius: 3px;
          float: left;

          li {
            display: inline-block;
            line-height: 18px;

            a {
              color: #666;
              text-decoration: none;

              &:hover {
                color: #4cb9fc;
              }
            }
          }
        }

        .sui-tag {
          margin-top: -5px;
          list-style: none;
          font-size: 0;
          line-height: 0;
          padding: 5px 0 0;
          margin-bottom: 18px;
          float: left;

          .with-x {
            font-size: 12px;
            margin: 0 5px 5px 0;
            display: inline-block;
            overflow: hidden;
            color: #000;
            background: #f7f7f7;
            padding: 0 7px;
            height: 20px;
            line-height: 20px;
            border: 1px solid #dedede;
            white-space: nowrap;
            transition: color 400ms;
            cursor: pointer;

            i {
              margin-left: 10px;
              cursor: pointer;
              font: 400 14px tahoma;
              display: inline-block;
              height: 100%;
              vertical-align: middle;
            }

            &:hover {
              color: #28a3ef;
            }
          }
        }
      }

      .details {
        margin-bottom: 5px;

        .sui-navbar {
          overflow: visible;
          margin-bottom: 0;

          .filter {
            min-height: 40px;
            padding-right: 20px;
            background: #fbfbfb;
            border: 1px solid #e2e2e2;
            padding-left: 0;
            border-radius: 0;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

            .sui-nav {
              position: relative;
              left: 0;
              display: block;
              float: left;
              margin: 0 10px 0 0;

              li {
                float: left;
                line-height: 18px;

                a {
                  display: block;
                  cursor: pointer;
                  padding: 11px 15px;
                  color: #777;
                  text-decoration: none;
                }

                &.active {
                  a {
                    background: #e1251b;
                    color: #fff;
                  }
                }
              }
            }
          }
        }

        .goods-list {
          margin: 20px 0;

          ul {
            display: flex;
            flex-wrap: wrap;

            li {
              height: 100%;
              width: 20%;
              margin-top: 10px;
              line-height: 28px;

              .list-wrap {
                .p-img {
                  padding-left: 15px;
                  width: 215px;
                  height: 255px;

                  a {
                    color: #666;

                    img {
                      max-width: 100%;
                      height: auto;
                      vertical-align: middle;
                    }
                  }
                }

                .price {
                  padding-left: 15px;
                  font-size: 18px;
                  color: #c81623;

                  strong {
                    font-weight: 700;

                    i {
                      margin-left: -5px;
                    }
                  }
                }

                .attr {
                  padding-left: 15px;
                  width: 85%;
                  overflow: hidden;
                  margin-bottom: 8px;
                  min-height: 38px;
                  cursor: pointer;
                  line-height: 1.8;
                  display: -webkit-box;
                  -webkit-box-orient: vertical;
                  -webkit-line-clamp: 2;

                  a {
                    color: #333;
                    text-decoration: none;
                  }
                }

                .commit {
                  padding-left: 15px;
                  height: 22px;
                  font-size: 13px;
                  color: #a7a7a7;

                  span {
                    font-weight: 700;
                    color: #646fb0;
                  }
                }

                .operate {
                  padding: 12px 15px;

                  .sui-btn {
                    display: inline-block;
                    padding: 2px 14px;
                    box-sizing: border-box;
                    margin-bottom: 0;
                    font-size: 12px;
                    line-height: 18px;
                    text-align: center;
                    vertical-align: middle;
                    cursor: pointer;
                    border-radius: 0;
                    background-color: transparent;
                    margin-right: 15px;
                  }

                  .btn-bordered {
                    min-width: 85px;
                    background-color: transparent;
                    border: 1px solid #8c8c8c;
                    color: #8c8c8c;

                    &:hover {
                      border: 1px solid #666;
                      color: #fff !important;
                      background-color: #666;
                      text-decoration: none;
                    }
                  }

                  .btn-danger {
                    border: 1px solid #e1251b;
                    color: #e1251b;

                    &:hover {
                      border: 1px solid #e1251b;
                      background-color: #e1251b;
                      color: white !important;
                      text-decoration: none;
                    }
                  }
                }
              }
            }
          }
        }

        .page {
          width: 733px;
          height: 66px;
          overflow: hidden;
          float: right;

          .sui-pagination {
            margin: 18px 0;

            ul {
              margin-left: 0;
              margin-bottom: 0;
              vertical-align: middle;
              width: 490px;
              float: left;

              li {
                line-height: 18px;
                display: inline-block;

                a {
                  position: relative;
                  float: left;
                  line-height: 18px;
                  text-decoration: none;
                  background-color: #fff;
                  border: 1px solid #e0e9ee;
                  margin-left: -1px;
                  font-size: 14px;
                  padding: 9px 18px;
                  color: #333;
                }

                &.active {
                  a {
                    background-color: #fff;
                    color: #e1251b;
                    border-color: #fff;
                    cursor: default;
                  }
                }

                &.prev {
                  a {
                    background-color: #fafafa;
                  }
                }

                &.disabled {
                  a {
                    color: #999;
                    cursor: default;
                  }
                }

                &.dotted {
                  span {
                    margin-left: -1px;
                    position: relative;
                    float: left;
                    line-height: 18px;
                    text-decoration: none;
                    background-color: #fff;
                    font-size: 14px;
                    border: 0;
                    padding: 9px 18px;
                    color: #333;
                  }
                }

                &.next {
                  a {
                    background-color: #fafafa;
                  }
                }
              }
            }

            div {
              color: #333;
              font-size: 14px;
              float: right;
              width: 241px;
            }
          }
        }
      }
    }
  }
</style>